Equality in Pollard's theorem on set addition of congruence classes
E. Nazarewicz, M. O'Brien, M. O'Neill, C. Staples (2007)
Acta Arithmetica
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E. Nazarewicz, M. O'Brien, M. O'Neill, C. Staples (2007)
Acta Arithmetica
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Manfred Armbrust (1973)
Colloquium Mathematicae
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Scott Ahlgren (2003)
Acta Arithmetica
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Marica D. Prešić (1979)
Publications de l'Institut Mathématique
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Alfred Rényi (1955)
Publications de l'Institut Mathématique [Elektronische Ressource]
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Hao Pan (2007)
Acta Arithmetica
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Ferdinánd Filip, Ladislav Mišík, János T. Tóth (2008)
Acta Arithmetica
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Gong, Sherry, Kominers, Scott Duke (2010)
Integers
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Ušan, Janez (1998)
Novi Sad Journal of Mathematics
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Oto Strauch, Janos T. Toth (2002)
Acta Arithmetica
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Magill, K.D.jun. (1984)
International Journal of Mathematics and Mathematical Sciences
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Ying Zhang (2007)
Acta Arithmetica
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J. Drewniak, M. Kuczma (1971)
Annales Polonici Mathematici
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Ivan Chajda, Radomír Halaš (2002)
Discussiones Mathematicae - General Algebra and Applications
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We present a countable infinite chain of conditions which are essentially weaker then congruence modularity (with exception of first two). For varieties of algebras, the third of these conditions, the so called 4-submodularity, is equivalent to congruence modularity. This is not true for single algebras in general. These conditions are characterized by Maltsev type conditions.
Gerhard Dorfer (2001)
Discussiones Mathematicae - General Algebra and Applications
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In this paper congruences on orthomodular lattices are studied with particular regard to analogies in Boolean algebras. For this reason the lattice of p-ideals (corresponding to the congruence lattice) and the interplay between congruence classes is investigated. From the results adduced there, congruence regularity, uniformity and permutability for orthomodular lattices can be derived easily.
John H. Hodges (1988)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti
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In 1972 the author used a result of K.F. Roth on irregularities in distribution of sequences of real numbers to prove an analogous result related to the distribution of sequences of integers in prescribed residue classes. Here, a 1972 result of W.M. Schmidt, which is an improvement of Roth's result, is used to obtain an improved result for sequences of integers.
Józef Słomiński (1974)
Colloquium Mathematicae
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John H. Hodges (1988)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
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In 1972 the author used a result of K.F. Roth on irregularities in distribution of sequences of real numbers to prove an analogous result related to the distribution of sequences of integers in prescribed residue classes. Here, a 1972 result of W.M. Schmidt, which is an improvement of Roth's result, is used to obtain an improved result for sequences of integers.